Channel Estimation Techniques for Single and Multiple Transmit Antenna Orthogonal Frequency Division Multiplexing (OFDM) Systems

Abstract

Orthogonal frequency division multiplexing (OFDM) is an efficient multi-carrier modulation technique which can be combined with transmitter and receiver diversity communication systems. Maximal ratio combining (MRC) and space-time block coding (STBC) can be used in conjunction with receiver and transmitter diversity in order to increase the communication system's performance. For these systems, channel estimation and tracking must be performed since the receiver requires channel state information for decoding. In this thesis, block-type and comb-type channel estimation algorithms for OFDM systems over multipath fading channels are studied and simulated. Performance results using simulated frequency-selective channels are presented.

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Document Details

Document Type
Technical Report
Publication Date
Sep 01, 2005
Accession Number
ADA439677

Entities

People

  • Mumtaz B. Sen

Organizations

  • Naval Postgraduate School

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Algorithms
  • Channel Estimation
  • Channel State Information
  • Coding
  • Communication Channels
  • Communication Systems
  • Computational Complexity
  • Data Transmission
  • Decoding
  • Doppler Effect
  • Frequency
  • Information Processing
  • Modulation
  • Multiple Input Multiple Output
  • Orthogonal Frequency Division Multiplexing
  • Radio Communications
  • Wireless Communications

Fields of Study

  • Engineering

Readers

  • Radio communications and signal processing.

Technology Areas

  • Space